131012200122173 has 2 divisors, whose sum is σ = 131012200122174. Its totient is φ = 131012200122172.

The previous prime is 131012200122131. The next prime is 131012200122217. The reversal of 131012200122173 is 371221002210131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130354328267524 + 657871854649 = 11417282^2 + 811093^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-131012200122173 is a prime.

It is a super-2 number, since 2×131012200122173² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131012200122103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65506100061086 + 65506100061087.

It is an arithmetic number, because the mean of its divisors is an integer number (65506100061087).

Almost surely, 2^{131012200122173} is an apocalyptic number.

It is an amenable number.

131012200122173 is a deficient number, since it is larger than the sum of its proper divisors (1).

131012200122173 is an equidigital number, since it uses as much as digits as its factorization.

131012200122173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 26.

The spelling of 131012200122173 in words is "one hundred thirty-one trillion, twelve billion, two hundred million, one hundred twenty-two thousand, one hundred seventy-three".